Nuclear structure of 30S and its implications for nucleosynthesis in classical novae

Background: The uncertainty in the 29P(p,γ)30S reaction rate over 0.1 ≤ T ≤ 1.3 GK was previously determined to span approximately four orders of magnitude due to the uncertain location of two previously unobserved 3+ and 2+ resonances in the Ex=4.7–4.8 MeV region in 30S. Therefore, the abundances of silicon isotopes synthesized in novae, which are relevant for the identification of presolar grains of putative nova origin, were uncertain by a …